But it can't be stopped as long as they want to stabilize the balance sheet and make the intimacy every season ka they and don't want to get out of the zone.
Dortmund are actually full of talented young players, it's just that with their condition that every season only wants profit from player sales, then they will continue to do it because Dortmund thinks this is the best way for them to get profit and they can't change it.
Dortmund could stop selling their talented players and try to make greater competition in the Bundesliga, but with such changes they must try to withstand all forms of risk, especially in terms of financial stability that might be affected.
The question that arises when they do that is how long will they do it? The risk will always be there, and even though they alwasy make a profit every season from the sales they make, the question is whether they will always be in a state where they will always be able to benefit from the star players they create? I have no doubt that they are the club with the most genius in spotting young talent. But risks must also be taken, because they also need titles as a club. They have the ability to do that, it's just a matter of how they intend to do it.
As long as the club is still comfortable with what it does each season and as long as many fans are quite happy with their current condition even though there are also many who demand that they do more then I think things like this will continue.
The conditions that Dortmund are doing are not just from one or two seasons but this kind of strategy has started when they were in the previous decade where Lewandowski was the opening for them to sell star players even to their own rival clubs.
So things like this will be difficult to change even if in the end there are several opportunities they want to take risks but when it is not in line with what is expected and actually makes them lose I think they will still return to their comfort zone by selling their star players for the club's financial benefits.